1
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Badiane A, Dupoué A, Blaimont P, Miles DB, Gilbert AL, Leroux-Coyau M, Kawamoto A, Rozen-Rechels D, Meylan S, Clobert J, Le Galliard JF. Environmental conditions and male quality traits simultaneously explain variation of multiple colour signals in male lizards. J Anim Ecol 2022; 91:1906-1917. [PMID: 35837855 PMCID: PMC9542398 DOI: 10.1111/1365-2656.13773] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 06/28/2022] [Indexed: 12/01/2022]
Abstract
Male lizards often display multiple pigment‐based and structural colour signals which may reflect various quality traits (e.g. performance, parasitism), with testosterone (T) often mediating these relationships. Furthermore, environmental conditions can explain colour signal variation by affecting processes such as signal efficacy, thermoregulation and camouflage. The relationships between colour signals, male quality traits and environmental factors have often been analysed in isolation, but simultaneous analyses are rare. Thus, the response of multiple colour signals to variation in all these factors in an integrative analysis remains to be investigated. Here, we investigated how multiple colour signals relate to their information content, examined the role of T as a potential mediator of these relationships and how environmental factors explain colour signal variation. We performed an integrative study to examine the covariation between three colour signals (melanin‐based black, carotenoid‐based yellow–orange and structural UV), physiological performance, parasitism, T levels and environmental factors (microclimate, forest cover) in male common lizards Zootoca vivipara from 13 populations. We found that the three colour signals conveyed information on different aspects of male condition, supporting a multiple message hypothesis. T influenced only parasitism, suggesting that T does not directly mediate the relationships between colour signals and their information content. Moreover, colour signals became more saturated in forested habitats, suggesting an adaptation to degraded light conditions, and became generally brighter in mesic conditions, in contradiction with the thermal melanism hypothesis. We show that distinct individual quality traits and environmental factors simultaneously explain variations of multiple colour signals with different production modes. Our study therefore highlights the complexity of colour signal evolution, involving various sets of selective pressures acting at the same time, but in different ways depending on colour production mechanism.
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Affiliation(s)
- Arnaud Badiane
- Sorbonne Université, CNRS, IRD, INRA, Institut d'écologie et des sciences de l'environnement (IEES), Paris, France
| | - Andréaz Dupoué
- Sorbonne Université, CNRS, IRD, INRA, Institut d'écologie et des sciences de l'environnement (IEES), Paris, France
| | | | - Donald B Miles
- Department of Biological Sciences, Ohio University, Athens, OH, USA
| | | | - Mathieu Leroux-Coyau
- Sorbonne Université, CNRS, IRD, INRA, Institut d'écologie et des sciences de l'environnement (IEES), Paris, France
| | - Anna Kawamoto
- Sorbonne Université, CNRS, IRD, INRA, Institut d'écologie et des sciences de l'environnement (IEES), Paris, France
| | - David Rozen-Rechels
- Sorbonne Université, CNRS, IRD, INRA, Institut d'écologie et des sciences de l'environnement (IEES), Paris, France
| | - Sandrine Meylan
- Sorbonne Université, CNRS, IRD, INRA, Institut d'écologie et des sciences de l'environnement (IEES), Paris, France
| | - Jean Clobert
- Station d'Ecologie Théorique et Expérimentale (SETE), USR5321, CNRS, Moulis, France
| | - Jean-François Le Galliard
- Sorbonne Université, CNRS, IRD, INRA, Institut d'écologie et des sciences de l'environnement (IEES), Paris, France.,Centre de Recherche en Écologie Expérimentale et Prédictive (CEREEP-Ecotron IleDeFrance), Département de biologie, Ecole Normale Supérieure, CNRS, PSL Research University, UMS 3194, Saint-Pierre-lès-Nemours, France
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2
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Masó G, Vicente‐Sastre D, Fitze P. Intrinsic climatic predictability affects ornamental coloration of adult males: evidence for compensation among carotenoid‐ and melanin‐based coloration. Funct Ecol 2022. [DOI: 10.1111/1365-2435.14021] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- G. Masó
- Department of Biodiversity and Ecologic Restoration Instituto Pirenaico de Ecología (IPE‐CSIC) Avda. Nuestra Señora de la Victoria 16 22700 Jaca Spain
- GRECO Institute of Aquatic Ecology University of Girona 17003 Girona Spain
- Faculty of Sciences and Technology (FCT) University of Vic – Central University of Catalonia (UVic‐UCC) C. de la Laura, 13 08500 Vic Spain
| | - D. Vicente‐Sastre
- Departament de Biologia Evolutiva Ecologia i Ciències Ambientals Universitat de Barcelona Av. Diagonal 643 08028 Barcelona Spain
| | - P.S. Fitze
- Department of Biodiversity and Ecologic Restoration Instituto Pirenaico de Ecología (IPE‐CSIC) Avda. Nuestra Señora de la Victoria 16 22700 Jaca Spain
- Department of Biodiversity and Evolutionary Biology Museo Nacional de Ciencias Naturales (MNCN‐CSIC) C/José Gutiérrez Abascal 2 28006 Madrid Spain
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3
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Aguilar P, Andrade P, Pérez I DE Lanuza G. Epistatic interactions between pterin and carotenoid genes modulate intra-morph color variation in a lizard. Integr Zool 2021; 17:44-53. [PMID: 34216104 DOI: 10.1111/1749-4877.12570] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Color polymorphisms have become a major topic in evolutionary biology and substantial efforts have been devoted to the understanding of the mechanisms responsible for originating such colorful systems. Within-morph continuous variation, on the other hand, has been neglected in most of the studies. Here, we combine spectrophotometric/visual modeling and genetic data to study the mechanisms promoting continuous variation within categorical color morphs of Podarcis muralis. Our results suggest that intra-morph variability in the pterin-based orange morph is greater compared to white and yellow morphs. We also show that continuous variation within the orange morph is partially discriminable by conspecifics. Genotyping results indicate that allelic variants at the BCO2 locus (responsible for deposition of yellow carotenoids) contribute to generate continuous variation in orange individuals. However, other intrinsic and/or extrinsic mechanisms, such as body size, might be involved, opening a new avenue for future research on the drivers of continuous variation within-morphs.
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Affiliation(s)
- Prem Aguilar
- CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos da Universidade do Porto, Porto, Portugal
| | - Pedro Andrade
- CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos da Universidade do Porto, Porto, Portugal
| | - Guillem Pérez I DE Lanuza
- CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos da Universidade do Porto, Porto, Portugal.,Ethology Lab, Institut Cavanilles de Biodiversitat i Biologia Evolutiva, Universitat de València, València, Spain
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4
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Steffen JE, Quigley R, Whibley I, McGraw KJ. Carotenoid deprivation and beta-carotene's effects on male and female turtle color. Comp Biochem Physiol B Biochem Mol Biol 2020; 253:110546. [PMID: 33346113 DOI: 10.1016/j.cbpb.2020.110546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 12/08/2020] [Accepted: 12/10/2020] [Indexed: 11/16/2022]
Abstract
Carotenoid-colored integuments commonly function as sexually selected honest signals because carotenoid pigments can be costly to obtain, ingest, absorb, metabolize or transport before being deposited into the integument. As such, carotenoid pigmentation is often sexually dichromatic, with males being more colorful than females. Sexual dichromatism may also occur in ultraviolet (UV) wavelengths, which is visible to organisms who possess UV-sensitive photoreceptors. The stripes and spots of painted turtles (Chrysemys picta) are carotenoid-based and reflect UV wavelengths. This research describes UV sexual dichromatism in painted turtles and shows how carotenoid deprivation changes spot and stripe color in male and female painted turtles. Adult turtles were fed a diet that was supplemented with carotenoids (i.e., C diet) or deprived of carotenoids (C-). Stripe and spot color were measured with UV-vis spectrometry, and blood was drawn from all turtles before and after the dietary treatment. HPLC analysis revealed five carotenoids (4 xanthophylls and beta-carotene) circulating in turtle blood. C-diet reduced yellow chroma and increased brightness of yellow and red stripes or spots, relative to the C diet, but there was no sexually dimorphic effect of carotenoid deprivation on color, nor did carotenoid deprivation affect UV reflectance. Carotenoid deprivation reduced all circulating carotenoids, but beta-carotene was the only pigment with a significant effect on post-experimental carotenoids, implying that changes in color were due in part to reduction in circulating levels of beta-carotene. Color generation appears to be complex in turtles and have dietary as well as non-dietary components.
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Affiliation(s)
- John E Steffen
- Department of Biology, Shepherd University, Shepherdstown, WV 25425, USA.
| | - Rhett Quigley
- Department of Biology, Shepherd University, Shepherdstown, WV 25425, USA
| | - Ian Whibley
- Department of Biology, Shepherd University, Shepherdstown, WV 25425, USA
| | - Kevin J McGraw
- Department of Biology, Shepherd University, Shepherdstown, WV 25425, USA
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5
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Sexually dichromatic coloration of female Iberian green lizards correlates with health state and reproductive investment. Behav Ecol Sociobiol 2020. [DOI: 10.1007/s00265-020-02915-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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6
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Wollenberg Valero KC, Marshall JC, Bastiaans E, Caccone A, Camargo A, Morando M, Niemiller ML, Pabijan M, Russello MA, Sinervo B, Werneck FP, Sites JW, Wiens JJ, Steinfartz S. Patterns, Mechanisms and Genetics of Speciation in Reptiles and Amphibians. Genes (Basel) 2019; 10:genes10090646. [PMID: 31455040 PMCID: PMC6769790 DOI: 10.3390/genes10090646] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/21/2019] [Accepted: 08/05/2019] [Indexed: 12/22/2022] Open
Abstract
In this contribution, the aspects of reptile and amphibian speciation that emerged from research performed over the past decade are reviewed. First, this study assesses how patterns and processes of speciation depend on knowing the taxonomy of the group in question, and discuss how integrative taxonomy has contributed to speciation research in these groups. This study then reviews the research on different aspects of speciation in reptiles and amphibians, including biogeography and climatic niches, ecological speciation, the relationship between speciation rates and phenotypic traits, and genetics and genomics. Further, several case studies of speciation in reptiles and amphibians that exemplify many of these themes are discussed. These include studies of integrative taxonomy and biogeography in South American lizards, ecological speciation in European salamanders, speciation and phenotypic evolution in frogs and lizards. The final case study combines genomics and biogeography in tortoises. The field of amphibian and reptile speciation research has steadily moved forward from the assessment of geographic and ecological aspects, to incorporating other dimensions of speciation, such as genetic mechanisms and evolutionary forces. A higher degree of integration among all these dimensions emerges as a goal for future research.
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Affiliation(s)
| | - Jonathon C Marshall
- Department of Zoology, Weber State University, 1415 Edvalson Street, Dept. 2505, Ogden, UT 84401, USA
| | - Elizabeth Bastiaans
- Department of Biology, State University of New York, College at Oneonta, Oneonta, NY 13820, USA
| | - Adalgisa Caccone
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06520, USA
| | - Arley Camargo
- Centro Universitario de Rivera, Universidad de la República, Ituzaingó 667, Rivera 40000, Uruguay
| | - Mariana Morando
- Instituto Patagónico para el Estudio de los Ecosistemas Continentales (IPEEC, CENPAT-CONICET) Bv. Brown 2915, Puerto Madryn U9120ACD, Argentina
| | - Matthew L Niemiller
- Department of Biological Sciences, The University of Alabama in Huntsville, Huntsville, AL 35899, USA
| | - Maciej Pabijan
- Department of Comparative Anatomy, Institute of Zoology and Biomedical Research, Jagiellonian University, ul. Gronostajowa 9, 30-387 Kraków, Poland
| | - Michael A Russello
- Department of Biology, University of British Columbia, Okanagan Campus, 3247 University Way, Kelowna, BC V1V 1V7, Canada
| | - Barry Sinervo
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, Coastal Biology Building, 130 McAllister Way, Santa Cruz, CA 95060, USA
| | - Fernanda P Werneck
- Programa de Coleções Científicas Biológicas, Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia, Manaus 69060-000, Brazil
| | - Jack W Sites
- Department of Biological and Marine Sciences, University of Hull, Cottingham Road, Hull HU6 7RX, UK
| | - John J Wiens
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA
| | - Sebastian Steinfartz
- Molecular Evolution and Systematics of Animals, Institute of Biology, University of Leipzig, Talstrasse 33, 04103 Leipzig, Germany
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7
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Stepanek J, Claunch NM, Frazier JA, Moore IT, Vernasco BJ, Escallón C, Taylor EN. Corticosterone and Color Change in Southern Pacific Rattlesnakes (Crotalus helleri). HERPETOLOGICA 2019. [DOI: 10.1655/d-18-00008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- John Stepanek
- Department of Biological Sciences, California Polytechnic State University, San Luis Obispo, CA 93407, USA
| | - Natalie M. Claunch
- Department of Biological Sciences, California Polytechnic State University, San Luis Obispo, CA 93407, USA
| | - Julius A. Frazier
- Department of Biological Sciences, California Polytechnic State University, San Luis Obispo, CA 93407, USA
| | - Ignacio T. Moore
- Department of Biological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
| | - Ben J. Vernasco
- Department of Biological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
| | - Camilo Escallón
- Department of Biological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
| | - Emily N. Taylor
- Department of Biological Sciences, California Polytechnic State University, San Luis Obispo, CA 93407, USA
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8
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Robinson CD, Gifford ME. Intraseasonal Changes of Patch Color in Prairie Lizards (Sceloporus Consobrinus). HERPETOLOGICA 2019. [DOI: 10.1655/d-18-00029.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
| | - Matthew E. Gifford
- Department of Biology, University of Central Arkansas, Conway, AR 72035, USA
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9
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Bonnaffé W, Martin M, Mugabo M, Meylan S, Le Galliard J. Ontogenetic trajectories of body coloration reveal its function as a multicomponent nonsenescent signal. Ecol Evol 2018; 8:12299-12307. [PMID: 30619546 PMCID: PMC6308879 DOI: 10.1002/ece3.4369] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 05/18/2018] [Accepted: 05/21/2018] [Indexed: 11/22/2022] Open
Abstract
The understanding of developmental patterns of body coloration is challenging because of the multicomponent nature of color signals and the multiple selective pressures acting upon them, which further depend on the sex of the bearer and area of display. Pigmentary colors are thought to be strongly involved in sexual selection, while structural colors are thought to generally associate with conspecifics interactions and improve the discrimination of pigmentary colors. Yet, it remains unclear whether age dependency in each color component is consistent with their potential function. Here, we address lifelong ontogenetic variation in three color components (i.e. UV, pigmentary, and skin background colors) in a birth cohort of common lizards Zootoca vivipara across three ventral body regions (i.e. throat, chest, and belly). All three color components developed sexual dichromatism, with males displaying stronger pigmentary and UV colors but weaker skin background coloration than females. The development of color components led to a stronger sexual dichromatism on the concealed ventral region than on the throat. No consistent signs of late-life decay in color components were found except for a deceleration of UV reflectance increase with age on the throat of males. These results suggest that body color components in common lizards are primarily nonsenescent sexual signals, but that the balance between natural and sexual selection may be altered by the conspicuousness of the area of display. These results further support the view that skin coloration is a composite trait constituted of multiple color components conveying multiple signals depending on age, sex, and body location.
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Affiliation(s)
- Willem Bonnaffé
- UPMC Univ Paris 06CNRSIRDINRAInstitut D’écologie et des Sciences de l'environnement (iEES)Sorbonne UniversitésParisFrance
- Département de BiologieEcole Normale SupérieurePSL Research UniversityParisFrance
| | - Mélissa Martin
- UPMC Univ Paris 06CNRSIRDINRAInstitut D’écologie et des Sciences de l'environnement (iEES)Sorbonne UniversitésParisFrance
| | - Marianne Mugabo
- UPMC Univ Paris 06CNRSIRDINRAInstitut D’écologie et des Sciences de l'environnement (iEES)Sorbonne UniversitésParisFrance
- School of BiologyFaculty of Biological SciencesUniversity of LeedsLeedsUK
| | - Sandrine Meylan
- UPMC Univ Paris 06CNRSIRDINRAInstitut D’écologie et des Sciences de l'environnement (iEES)Sorbonne UniversitésParisFrance
- Paris‐Sorbonne Univ Paris 04ESPE de l'académie de ParisSorbonne UniversitésParisFrance
| | - Jean‐François Le Galliard
- UPMC Univ Paris 06CNRSIRDINRAInstitut D’écologie et des Sciences de l'environnement (iEES)Sorbonne UniversitésParisFrance
- Centre de Recherche en Écologie Expérimentale et Prédictive (CEREEP‐Ecotron IleDeFrance)Ecole Normale SupérieureCNRSUMS 3194PSL Research UniversitySaint‐Pierre‐lès‐NemoursFrance
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10
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Merkling T, Chandrasoma D, Rankin KJ, Whiting MJ. Seeing red: pteridine-based colour and male quality in a dragon lizard. Biol J Linn Soc Lond 2018. [DOI: 10.1093/biolinnean/bly074] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Thomas Merkling
- Division of Ecology, Evolution & Genetics, Research School of Biology, The Australian National University, Canberra, ACT, Australia
| | - Dani Chandrasoma
- Department of Biological Sciences, Macquarie University, Sydney, NSW, Australia
| | - Katrina J Rankin
- School of BioSciences, The University of Melbourne, Parkville, VIC, Australia
| | - Martin J Whiting
- Department of Biological Sciences, Macquarie University, Sydney, NSW, Australia
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11
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Kranz AM, Cole GL, Singh P, Endler JA. Colour pattern component phenotypic divergence can be predicted by the light environment. J Evol Biol 2018; 31:1459-1476. [PMID: 29947081 DOI: 10.1111/jeb.13342] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 06/14/2018] [Accepted: 06/22/2018] [Indexed: 11/29/2022]
Abstract
The sensory drive hypothesis predicts that across different light environments sexually selected colour patterns will change to increase an animal's visual communication efficiency within different habitats. This is because individuals with more efficient signal components are likely to have more successful matings and hence produce more offspring. However, how colour pattern signals change over multiple generations under different light environmental conditions has not been tested experimentally. Here, we manipulated colour pattern signal efficiency by providing different ambient light environments over multiple generations to examine whether male colour pattern components change within large replicated populations of guppies (Poecilia reticulata). We report that colour patches change within populations over time and are phenotypically different among our three different light environments. Visual modelling suggests that the majority of these changes can be understood by considering the chroma, hue and luminance of each colour patch as seen by female guppies under each light environment. Taken together, our results support the hypothesis that different environmental conditions during signal reception can directly or indirectly drive the phenotypic diversification of visual signals within species.
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Affiliation(s)
- Alexandrea M Kranz
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Geelong, Vic, 3216, Australia
| | - Gemma L Cole
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Geelong, Vic, 3216, Australia
| | - Priti Singh
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Geelong, Vic, 3216, Australia
| | - John A Endler
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Geelong, Vic, 3216, Australia
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12
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San-Jose LM, Roulin A. Genomics of coloration in natural animal populations. Philos Trans R Soc Lond B Biol Sci 2018; 372:rstb.2016.0337. [PMID: 28533454 DOI: 10.1098/rstb.2016.0337] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/15/2017] [Indexed: 12/28/2022] Open
Abstract
Animal coloration has traditionally been the target of genetic and evolutionary studies. However, until very recently, the study of the genetic basis of animal coloration has been mainly restricted to model species, whereas research on non-model species has been either neglected or mainly based on candidate approaches, and thereby limited by the knowledge obtained in model species. Recent high-throughput sequencing technologies allow us to overcome previous limitations, and open new avenues to study the genetic basis of animal coloration in a broader number of species and colour traits, and to address the general relevance of different genetic structures and their implications for the evolution of colour. In this review, we highlight aspects where genome-wide studies could be of major utility to fill in the gaps in our understanding of the biology and evolution of animal coloration. The new genomic approaches have been promptly adopted to study animal coloration although substantial work is still needed to consider a larger range of species and colour traits, such as those exhibiting continuous variation or based on reflective structures. We argue that a robust advancement in the study of animal coloration will also require large efforts to validate the functional role of the genes and variants discovered using genome-wide tools.This article is part of the themed issue 'Animal coloration: production, perception, function and application'.
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Affiliation(s)
- Luis M San-Jose
- Department of Ecology and Evolution, University of Lausanne, Building Le Biophore, 1015 Lausanne, Switzerland
| | - Alexandre Roulin
- Department of Ecology and Evolution, University of Lausanne, Building Le Biophore, 1015 Lausanne, Switzerland
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13
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Kopena R, López P, Martín J. Immune challenged male Iberian green lizards may increase the expression of some sexual signals if they have supplementary vitamin E. Behav Ecol Sociobiol 2017. [DOI: 10.1007/s00265-017-2401-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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14
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Romero-Diaz C, Breedveld MC, Fitze PS. Climate Effects on Growth, Body Condition, and Survival Depend on the Genetic Characteristics of the Population. Am Nat 2017; 190:649-662. [DOI: 10.1086/693780] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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15
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Lewis AC, Rankin KJ, Pask AJ, Stuart-Fox D. Stress-induced changes in color expression mediated by iridophores in a polymorphic lizard. Ecol Evol 2017; 7:8262-8272. [PMID: 29075447 PMCID: PMC5648675 DOI: 10.1002/ece3.3349] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Revised: 06/18/2017] [Accepted: 07/23/2017] [Indexed: 12/17/2022] Open
Abstract
Stress is an important potential factor mediating a broad range of cellular pathways, including those involved in condition‐dependent (i.e., honest) color signal expression. However, the cellular mechanisms underlying the relationship between stress and color expression are largely unknown. We artificially elevated circulating corticosterone levels in male tawny dragon lizards, Ctenophorus decresii, to assess the effect of stress on the throat color signal. Corticosterone treatment increased luminance (paler throat coloration) and decreased the proportion of gray, thereby influencing the gray reticulations that produce unique patterning. The magnitude of change in luminance for corticosterone‐treated individuals in our study was around 6 “just noticeable differences” to the tawny dragon visual system, suggesting that lizards are likely to be able to perceive the measured variation. Transmission electron microscopy (TEM) of iridophore cells indicated that luminance increased with increasing density of iridophore cells and increased spacing (and/or reduced size) of crystalline guanine platelets within them. Crystal spacing within iridophores also differed between skin colors, being greater in cream than either gray or yellow skin and greater in orange than yellow skin. Our results demonstrate that stress detectably impacts signal expression (luminance and patterning), which may provide information on individual condition. This effect is likely to be mediated, at least in part, by structural coloration produced by iridophore cells.
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Affiliation(s)
- Anna C Lewis
- School of BioSciences The University of Melbourne Parkville Vic Australia
| | - Katrina J Rankin
- School of BioSciences The University of Melbourne Parkville Vic Australia
| | - Andrew J Pask
- School of BioSciences The University of Melbourne Parkville Vic Australia
| | - Devi Stuart-Fox
- School of BioSciences The University of Melbourne Parkville Vic Australia
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16
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Megía-Palma R, Martínez J, Merino S. Manipulation of parasite load induces significant changes in the structural-based throat color of male iberian green lizards. Curr Zool 2017; 64:293-302. [PMID: 30402070 PMCID: PMC6007217 DOI: 10.1093/cz/zox036] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 05/12/2017] [Indexed: 11/16/2022] Open
Abstract
The honesty of structural-based ornaments is controversial. Sexual selection theory predicts that the honesty of a sexual signal relies on its cost of production or maintenance. Therefore, environmental factors with negative impact on individuals could generate high costs and affect the expression of these sexual signals. In this sense, parasites are a main cost for their hosts. To probe the effect of parasites on the structural-based coloration of a lacertid species Lacerta schreiberi, we have experimentally removed ticks from a group of male Iberian green lizards using an acaricide treatment (i.e., the broad-use insecticide fipronil). All individuals were radio-tracked and recaptured after 15 days to study changes in coloration in both the ultraviolet (UV)-blue (structural-based) and UV-yellow (structural and pigment-based) ornamentations after manipulation, as well as changes in endo- and ectoparasitic load and body condition. Additionally, after the experiment, we measured the skin inflammatory response to a mitogen. The fipronil treatment was effective in reducing ticks and it was associated with a significant reduction of hemoparasite load. Throughout the season, individuals treated with fipronil tended to maintain the brightness of the UV-blue throat coloration while control lizards tended to increase it. However, individuals treated with fipronil that were not infected with hemoparasites significantly reduced the brightness of the UV-blue throat coloration. Individuals with a higher initial tick load exhibited a lower UV saturation increment (UV-blue) and a higher brightness increment (UV-yellow) during the experiment. Overall these results experimentally support the idea that parasites adversely influence the expression of the structural-based coloration of male Iberian green lizards. This adds evidence to the hypothesis that sexual ornaments in lizards function as honest signals.
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Affiliation(s)
- Rodrigo Megía-Palma
- Dept Ecología Evolutiva, Museo Nacional de Ciencias Naturales-CSIC, J. Gutiérrez Abascal 2, E-28006, Madrid, Spain
| | - Javier Martínez
- Área Parasitología, Dept Biomedicina y Biotecnología, Área de Parasitología. Facultad de Farmacia, Universidad de Alcalá de Henares, Alcalá de Henares, E-28871, Madrid, Spain
| | - Santiago Merino
- Dept Ecología Evolutiva, Museo Nacional de Ciencias Naturales-CSIC, J. Gutiérrez Abascal 2, E-28006, Madrid, Spain
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17
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Manukyan L, Montandon SA, Fofonjka A, Smirnov S, Milinkovitch MC. A living mesoscopic cellular automaton made of skin scales. Nature 2017; 544:173-179. [DOI: 10.1038/nature22031] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 03/01/2017] [Indexed: 11/09/2022]
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18
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Václav R, Kolníková Z. Effects of food and thermal regimes on body condition indices and skin colouration in corn snakes. Biologia (Bratisl) 2017. [DOI: 10.1515/biolog-2017-0008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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19
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Rodrigo MP, Javier M, Santiago M. Structural- and carotenoid-based throat colour patches in males of Lacerta schreiberi reflect different parasitic diseases. Behav Ecol Sociobiol 2016. [DOI: 10.1007/s00265-016-2205-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Megía-Palma R, Martínez J, Merino S. A structural colour ornament correlates positively with parasite load and body condition in an insular lizard species. Naturwissenschaften 2016; 103:52. [PMID: 27262291 DOI: 10.1007/s00114-016-1378-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Revised: 05/22/2016] [Accepted: 05/26/2016] [Indexed: 11/28/2022]
Abstract
Pigment-based ornaments in vertebrates may reflect the body condition or health status of the individual in correlation with environmental stress and hormonal balance. Among the environmental factors shaping sexual colouration, parasitic infections have been stressed as an important evolutionary pressure constraining the maintenance of pigment-based ornaments. However, the honesty of structure-based ornaments in vertebrates is still under debate. Structural UV-biased ornaments in Gallotia lizards were described as a trait used by conspecifics during mate and rival assessment suggesting the reliability of these signals. We investigated the relationship between parasitaemia, body condition and a structural-based ornament present in the cheek of the sexually dichromatic Canarian lacertid Gallotia galloti in a population with an almost 100 % prevalence of haemoparasites. Using spectrophotometric techniques, we found that males with higher values of cheek UV chroma were infected with more haemoparasites. No significant relationship was found between haemoparasite load and body condition. However, males with higher cheek UV chroma showed significantly better body condition. In addition, we found that cheek hue was significantly related to body condition of individuals in both sexes. In males, cheek reflectivity biased towards the UV range was significantly related to better body condition. In females, those individuals with better body condition showed more whitish cheeks with less UV suggesting that cheek hue serves as an intersexual signal for sex recognition. We conclude that the positive relationship between cheek chroma and parasite load in male lizards is compatible with both differential density of melanin and iridophore arrangement in the dermis conveying an individual's ability to cope with environmental stress.
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Affiliation(s)
- Rodrigo Megía-Palma
- Departamento de Ecología Evolutiva, Museo Nacional de Ciencias Naturales-CSIC, J. Gutiérrez Abascal 2, E-28006, Madrid, Spain.
| | - Javier Martínez
- Área Parasitología. Departamento de Biomedicina y Biotecnología.Facultad de Farmacia, Universidad de Alcalá de Henares, Alcalá de Henares, E-28871, Madrid, Spain
| | - Santiago Merino
- Departamento de Ecología Evolutiva, Museo Nacional de Ciencias Naturales-CSIC, J. Gutiérrez Abascal 2, E-28006, Madrid, Spain
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21
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Iskandar JP, Eliason CM, Astrop T, Igic B, Maia R, Shawkey MD. Morphological basis of glossy red plumage colours. Biol J Linn Soc Lond 2016. [DOI: 10.1111/bij.12810] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jean-Pierre Iskandar
- Integrated Bioscience Department; The University of Akron; 175 E. Mill St. Akron OH 44325-3908 USA
| | - Chad M. Eliason
- Integrated Bioscience Department; The University of Akron; 175 E. Mill St. Akron OH 44325-3908 USA
- Departments of Geological Sciences and Integrative Bioscience; University of Texas at Austin; 2305 Speedway Stop C1160 Austin TX 78712 USA
| | - Tim Astrop
- Integrated Bioscience Department; The University of Akron; 175 E. Mill St. Akron OH 44325-3908 USA
- Department of Biology & Biochemistry; University of Bath; Bath BA2 7AY UK
| | - Branislav Igic
- Integrated Bioscience Department; The University of Akron; 175 E. Mill St. Akron OH 44325-3908 USA
| | - Rafael Maia
- Integrated Bioscience Department; The University of Akron; 175 E. Mill St. Akron OH 44325-3908 USA
- Department of Ecology; Evolution and Environmental Biology; Columbia University; 1200 Amsterdam Avenue New York NY 10027 USA
| | - Matthew D. Shawkey
- Integrated Bioscience Department; The University of Akron; 175 E. Mill St. Akron OH 44325-3908 USA
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22
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Coloration reflects skin pterin concentration in a red-tailed lizard. Comp Biochem Physiol B Biochem Mol Biol 2016; 193:17-24. [DOI: 10.1016/j.cbpb.2015.11.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 11/04/2015] [Accepted: 11/05/2015] [Indexed: 12/23/2022]
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23
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Pérez I de Lanuza G, Font E. The evolution of colour pattern complexity: selection for conspicuousness favours contrasting within-body colour combinations in lizards. J Evol Biol 2016; 29:942-51. [PMID: 26801820 DOI: 10.1111/jeb.12835] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 01/11/2016] [Accepted: 01/15/2016] [Indexed: 02/04/2023]
Abstract
Many animals display complex colour patterns that comprise several adjacent, often contrasting colour patches. Combining patches of complementary colours increases the overall conspicuousness of the complex pattern, enhancing signal detection. Therefore, selection for conspicuousness may act not only on the design of single colour patches, but also on their combination. Contrasting long- and short-wavelength colour patches are located on the ventral and lateral surfaces of many lacertid lizards. As the combination of long- and short-wavelength-based colours generates local chromatic contrast, we hypothesized that selection may favour the co-occurrence of lateral and ventral contrasting patches, resulting in complex colour patterns that maximize the overall conspicuousness of the signal. To test this hypothesis, we performed a comparative phylogenetic study using a categorical colour classification based on spectral data and descriptive information on lacertid coloration collected from the literature. Our results demonstrate that conspicuous ventral (long-wavelength-based) and lateral (short-wavelength-based) colour patches co-occur throughout the lacertid phylogeny more often than expected by chance, especially in the subfamily Lacertini. These results suggest that selection promotes the evolution of the complex pattern rather than the acquisition of a single conspicuous colour patch, possibly due to the increased conspicuousness caused by the combination of colours with contrasting spectral properties.
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Affiliation(s)
- G Pérez I de Lanuza
- CIBIO Research Centre in Biodiversity and Genetic Resources, InBIO, Universidade do Porto, Campus Agrário de Vairão, Vairão, Vila do Conde, Portugal
| | - E Font
- Ethology Lab, Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, Paterna, Spain
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Amelanism in the corn snake is associated with the insertion of an LTR-retrotransposon in the OCA2 gene. Sci Rep 2015; 5:17118. [PMID: 26597053 PMCID: PMC4657000 DOI: 10.1038/srep17118] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 10/26/2015] [Indexed: 12/21/2022] Open
Abstract
The corn snake (Pantherophis guttatus) is a new model species particularly appropriate for investigating the processes generating colours in reptiles because numerous colour and pattern mutants have been isolated in the last five decades. Using our captive-bred colony of corn snakes, transcriptomic and genomic next-generation sequencing, exome assembly, and genotyping of SNPs in multiple families, we delimit the genomic interval bearing the causal mutation of amelanism, the oldest colour variant observed in that species. Proceeding with sequencing the candidate gene OCA2 in the uncovered genomic interval, we identify that the insertion of an LTR-retrotransposon in its 11th intron results in a considerable truncation of the p protein and likely constitutes the causal mutation of amelanism in corn snakes. As amelanistic snakes exhibit white, instead of black, borders around an otherwise normal pattern of dorsal orange saddles and lateral blotches, our results indicate that melanocytes lacking melanin are able to participate to the normal patterning of other colours in the skin. In combination with research in the zebrafish, this work opens the perspective of using corn snake colour and pattern variants to investigate the generative processes of skin colour patterning shared among major vertebrate lineages.
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25
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Moore FR, Shuker DM, Dougherty L. Stress and sexual signaling: a systematic review and meta-analysis. Behav Ecol 2015. [DOI: 10.1093/beheco/arv195] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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26
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Martin M, Meylan S, Haussy C, Decencière B, Perret S, Le Galliard JF. UV color determines the issue of conflicts but does not covary with individual quality in a lizard. Behav Ecol 2015. [DOI: 10.1093/beheco/arv149] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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27
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Merkling T, Hamilton DG, Cser B, Svedin N, Pryke SR. Proximate mechanisms of colour variation in the frillneck lizard: geographical differences in pigment contents of an ornament. Biol J Linn Soc Lond 2015. [DOI: 10.1111/bij.12672] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Thomas Merkling
- Division of Ecology; Evolution & Genetics; Research School of Biology; The Australian National University; 44 Daley Rd ACTON ACT 2601 Australia
| | - David G. Hamilton
- Division of Ecology; Evolution & Genetics; Research School of Biology; The Australian National University; 44 Daley Rd ACTON ACT 2601 Australia
| | - Borbala Cser
- Division of Ecology; Evolution & Genetics; Research School of Biology; The Australian National University; 44 Daley Rd ACTON ACT 2601 Australia
| | - Nina Svedin
- Division of Ecology; Evolution & Genetics; Research School of Biology; The Australian National University; 44 Daley Rd ACTON ACT 2601 Australia
| | - Sarah R. Pryke
- Division of Ecology; Evolution & Genetics; Research School of Biology; The Australian National University; 44 Daley Rd ACTON ACT 2601 Australia
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28
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Haisten DC, Paranjpe D, Loveridge S, Sinervo B. The Cellular Basis of Polymorphic Coloration in Common Side-Blotched Lizards,Uta stansburiana. HERPETOLOGICA 2015. [DOI: 10.1655/herpetologica-d-13-00091] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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29
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Driessens T, Huyghe K, Vanhooydonck B, Van Damme R. Messages conveyed by assorted facets of the dewlap, in both sexes of Anolis sagrei. Behav Ecol Sociobiol 2015. [DOI: 10.1007/s00265-015-1938-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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30
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Cahn MD, Brown AC, Clotfelter ED. Guanine-based structural coloration as an indicator of oxidative stress in a cichlid fish. ACTA ACUST UNITED AC 2015; 323:359-67. [DOI: 10.1002/jez.1926] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 01/30/2015] [Accepted: 02/02/2015] [Indexed: 01/09/2023]
Affiliation(s)
- Matthew D. Cahn
- Department of Biology; Amherst College; Amherst Massachusetts
| | - Alexandria C. Brown
- Department of Biology; Amherst College; Amherst Massachusetts
- Graduate Program in Organismic and Evolutionary Biology; University of Massachusetts; Amherst Massachusetts
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31
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San-Jose LM, Peñalver-Alcázar M, Milá B, Gonzalez-Jimena V, Fitze PS. Cumulative frequency-dependent selective episodes allow for rapid morph cycles and rock-paper-scissors dynamics in species with overlapping generations. Proc Biol Sci 2015; 281:20140976. [PMID: 24943372 DOI: 10.1098/rspb.2014.0976] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Rock-paper-scissors (RPS) dynamics, which maintain genetic polymorphisms over time through negative frequency-dependent (FD) selection, can evolve in short-lived species with no generational overlap, where they produce rapid morph frequency cycles. However, most species have overlapping generations and thus, rapid RPS dynamics are thought to require stronger FD selection, the existence of which yet needs to be proved. Here, we experimentally demonstrate that two cumulative selective episodes, FD sexual selection reinforced by FD selection on offspring survival, generate sufficiently strong selection to generate rapid morph frequency cycles in the European common lizard Zootoca vivipara, a multi-annual species with major generational overlap. These findings show that the conditions required for the evolution of RPS games are fulfilled by almost all species exhibiting genetic polymorphisms and suggest that RPS games may be responsible for the maintenance of genetic diversity in a wide range of species.
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Affiliation(s)
- Luis M San-Jose
- Department of Ecology and Evolutionary Biology, University of Lausanne, Lausanne 1015, Switzerland Instituto Pirenaico de Ecología, (IPE-CSIC), Jaca 22700, Spain Department of Biodiversity and Evolutionary Biology, Museo Nacional de Ciencias Naturales (MNCN-CSIC), Madrid 28006, Spain
| | - Miguel Peñalver-Alcázar
- Instituto Pirenaico de Ecología, (IPE-CSIC), Jaca 22700, Spain Department of Biodiversity and Evolutionary Biology, Museo Nacional de Ciencias Naturales (MNCN-CSIC), Madrid 28006, Spain
| | - Borja Milá
- Department of Biodiversity and Evolutionary Biology, Museo Nacional de Ciencias Naturales (MNCN-CSIC), Madrid 28006, Spain
| | - Virginia Gonzalez-Jimena
- Instituto Pirenaico de Ecología, (IPE-CSIC), Jaca 22700, Spain Department of Biodiversity and Evolutionary Biology, Museo Nacional de Ciencias Naturales (MNCN-CSIC), Madrid 28006, Spain
| | - Patrick S Fitze
- Department of Ecology and Evolutionary Biology, University of Lausanne, Lausanne 1015, Switzerland Instituto Pirenaico de Ecología, (IPE-CSIC), Jaca 22700, Spain Department of Biodiversity and Evolutionary Biology, Museo Nacional de Ciencias Naturales (MNCN-CSIC), Madrid 28006, Spain Fundación Araid, Zaragoza 50018, Spain
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Martin M, Le Galliard JF, Meylan S, Loew ER. The importance of ultraviolet and near-infrared sensitivity for visual discrimination in two species of lacertid lizards. ACTA ACUST UNITED AC 2014; 218:458-65. [PMID: 25524990 DOI: 10.1242/jeb.115923] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Male and female Lacertid lizards often display conspicuous coloration that is involved in intraspecific communication. However, visual systems of Lacertidae have rarely been studied and the spectral sensitivity of their retinal photoreceptors remains unknown. Here, we characterise the spectral sensitivity of two Lacertid species from contrasting habitats: the wall lizard Podarcis muralis and the common lizard Zootoca vivipara. Both species possess a pure-cone retina with one spectral class of double cones and four spectral classes of single cones. The two species differ in the spectral sensitivity of the LWS cones, the relative abundance of UVS single cones (potentially more abundant in Z. vivipara) and the coloration of oil droplets. Wall lizards have pure vitamin A1-based photopigments, whereas common lizards possess mixed vitamin A1 and A2 photopigments, extending spectral sensitivity into the near infrared, which is a rare feature in terrestrial vertebrates. We found that spectral sensitivity in the UV and near infrared improves discrimination of small variations in throat coloration among Z. vivipara. Thus, retinal specialisations optimise chromatic resolution in common lizards, indicating that the visual system and visual signals might co-evolve.
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Affiliation(s)
- Mélissa Martin
- CNRS UMR 7618, iEES Paris, Université Pierre et Marie Curie, 75005 Paris, France CNRS UMR 7179, Département d'Ecologie et de Gestion de la Biodiversité, Muséum National d'Histoire Naturelle, 91800 Brunoy, France
| | - Jean-François Le Galliard
- CNRS UMR 7618, iEES Paris, Université Pierre et Marie Curie, 75005 Paris, France CNRS UMS 3194, CEREEP - Ecotron IleDeFrance, École Normale Supérieure, 77140 St-Pierre-lès-Nemours, France
| | - Sandrine Meylan
- CNRS UMR 7618, iEES Paris, Université Pierre et Marie Curie, 75005 Paris, France ESPE de Paris-Université Sorbonne Paris IV, 75016 Paris, France
| | - Ellis R Loew
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
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Fitze PS, Gonzalez-Jimena V, San-Jose LM, Heulin B, Sinervo B. Frequency-dependent sexual selection with respect to progeny survival is consistent with predictions from rock-paper-scissors dynamics in the European common lizard. Front Ecol Evol 2014. [DOI: 10.3389/fevo.2014.00077] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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34
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Ibáñez A, Polo-Cavia N, López P, Martín J. Honest sexual signaling in turtles: experimental evidence of a trade-off between immune response and coloration in red-eared sliders Trachemys scripta elegans. Naturwissenschaften 2014; 101:803-11. [PMID: 25091549 DOI: 10.1007/s00114-014-1219-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 07/21/2014] [Accepted: 07/25/2014] [Indexed: 11/30/2022]
Abstract
Sexual signals can be evolutionarily stable if they are honest and condition dependent or costly to the signaler. One possible cost is the existence of a trade-off between maintaining the immune system and the elaboration of ornaments. This hypothesis has been experimentally tested in some groups of animals but not in others such as turtles. We experimentally challenged the immune system of female red-eared sliders Trachemys scripta elegans, with a bacterial antigen (lipopolysaccharide (LPS)) without pathogenic effects to explore whether the immune activation affected visual colorful ornaments of the head. The LPS injection altered the reflectance patterns of color ornaments. In comparison to the control animals, the yellow chin stripes of injected animals exhibited (1) reduced brightness, (2) lower long wavelength (>470 nm) reflectance, and (3) lower values for carotenoid chroma. The postorbital patches of injected individuals also showed reduced very long wavelength (>570 nm) reflectance but did not change in carotenoid chroma. Thus, experimental turtles showed darker and less "yellowish" chin stripes and less "reddish" postorbital patches at the end of the experiment, whereas control turtles did not change their coloration. This is the first experimental evidence supporting the existence of a trade-off between the immune system and the expression of visual ornaments in turtles. We suggest that this trade-off may allow turtles to honestly signal individual quality via characteristics of coloration, which may have an important role in intersexual selection processes.
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Affiliation(s)
- Alejandro Ibáñez
- Departamento de Ecología Evolutiva, Museo Nacional de Ciencias Naturales, C.S.I.C., José Gutiérrez Abascal 2, 28006, Madrid, Spain
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35
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Preference for male traits differ in two female morphs of the tree lizard, Urosaurus ornatus. PLoS One 2014; 9:e101515. [PMID: 25033282 PMCID: PMC4102484 DOI: 10.1371/journal.pone.0101515] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Accepted: 06/06/2014] [Indexed: 11/19/2022] Open
Abstract
Non-random female mating preferences may contribute to the maintenance of phenotypic variation in color polymorphic species. However, the effect of female preference depends on the types of male traits used as signals by receptive females. If preference signals derive from discrete male traits (i.e., morph-specific), female preferences may rapidly fix to a morph. However, female preference signals may also include condition-dependent male traits. In this scenario, female preference may differ depending on the social context (i.e., male morph availability). Male tree lizards (Urosaurus ornatus) exhibit a dewlap color polymorphism that covaries with mating behavior. Blue morph males are aggressive and defend territories, yellow males are less aggressive and defend smaller territories, and orange males are typically nomadic. Female U. ornatus are also polymorphic in dewlap color, but the covariation between dewlap color and female behavior is unknown. We performed an experiment to determine how female mate choice depends on the visual and chemical signals produced by males. We also tested whether female morphs differ in their preferences for these signals. Female preferences involved both male dewlap color and size of the ventral color patch. However, the female morphs responded to these signals differently and depended on the choice between the types of male morphs. Our experiment revealed that females may be capable of distinguishing among the male morphs using chemical signals alone. Yellow females exhibit preferences based on both chemical and visual signals, which may be a strategy to avoid ultra-dominant males. In contrast, orange females may prefer dominant males. We conclude that female U. ornatus morphs differ in mating behavior. Our findings also provide evidence for a chemical polymorphism among male lizards in femoral pore secretions.
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36
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Sefc KM, Brown AC, Clotfelter ED. Carotenoid-based coloration in cichlid fishes. Comp Biochem Physiol A Mol Integr Physiol 2014; 173C:42-51. [PMID: 24667558 PMCID: PMC4003536 DOI: 10.1016/j.cbpa.2014.03.006] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 03/03/2014] [Accepted: 03/14/2014] [Indexed: 02/04/2023]
Abstract
Animal colors play important roles in communication, ecological interactions and speciation. Carotenoid pigments are responsible for many yellow, orange and red hues in animals. Whereas extensive knowledge on the proximate mechanisms underlying carotenoid coloration in birds has led to testable hypotheses on avian color evolution and signaling, much less is known about the expression of carotenoid coloration in fishes. Here, we promote cichlid fishes (Perciformes: Cichlidae) as a system in which to study the physiological and evolutionary significance of carotenoids. Cichlids include some of the best examples of adaptive radiation and color pattern diversification in vertebrates. In this paper, we examine fitness correlates of carotenoid pigmentation in cichlids and review hypotheses regarding the signal content of carotenoid-based ornaments. Carotenoid-based coloration is influenced by diet and body condition and is positively related to mating success and social dominance. Gaps in our knowledge are discussed in the last part of this review, particularly in the understanding of carotenoid metabolism pathways and the genetics of carotenoid coloration. We suggest that carotenoid metabolism and transport are important proximate mechanisms responsible for individual and population-differences in cichlid coloration that may ultimately contribute to diversification and speciation.
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Affiliation(s)
- Kristina M Sefc
- Institute of Zoology, University of Graz, Universitätsplatz 2, 8010 Graz, Austria
| | - Alexandria C Brown
- Department of Biology, Amherst College, Amherst, MA 01002, USA; Graduate Program in Organismic and Evolutionary Biology, University of Massachusetts, Amherst, MA 01003 USA
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37
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Pellitteri-Rosa D, Martín J, López P, Bellati A, Sacchi R, Fasola M, Galeotti P. Chemical polymorphism in male femoral gland secretions matches polymorphic coloration in common wall lizards (Podarcis muralis). CHEMOECOLOGY 2014. [DOI: 10.1007/s00049-014-0148-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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38
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Kopena R, López P, Martín J. Relative contribution of dietary carotenoids and vitamin E to visual and chemical sexual signals of male Iberian green lizards: an experimental test. Behav Ecol Sociobiol 2014. [DOI: 10.1007/s00265-013-1672-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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39
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San-Jose LM, Fitze PS. Corticosterone regulates multiple colour traits in Lacerta
[Zootoca
] vivipara
males. J Evol Biol 2013; 26:2681-90. [DOI: 10.1111/jeb.12265] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 09/10/2013] [Accepted: 09/10/2013] [Indexed: 11/28/2022]
Affiliation(s)
- L. M. San-Jose
- Department of Ecology and Evolution; University of Lausanne; Lausanne Switzerland
- Department of Biodiversity and Evolutionary Biology; Museo Nacional de Ciencias Naturales (MNCN-CSIC); Madrid Spain
- Instituto Pirenaico de Ecología (IPE-CSIC); Jaca Spain
| | - P. S. Fitze
- Department of Ecology and Evolution; University of Lausanne; Lausanne Switzerland
- Department of Biodiversity and Evolutionary Biology; Museo Nacional de Ciencias Naturales (MNCN-CSIC); Madrid Spain
- Instituto Pirenaico de Ecología (IPE-CSIC); Jaca Spain
- Fundación ARAID; Zaragoza Spain
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40
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Ng J, Kelly AL, MacGuigan DJ, Glor RE. The role of heritable and dietary factors in the sexual signal of a Hispaniolan Anolis lizard, Anolis distichus. ACTA ACUST UNITED AC 2013; 104:862-73. [PMID: 24078680 DOI: 10.1093/jhered/est060] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The diversity of sexual signals is astounding, and divergence in these traits is believed to be associated with the early stages of speciation. An increasing number of studies also suggest a role for natural selection in driving signal divergence for effective transmission in heterogeneous environments. Both speciation and adaptive divergence, however, are contingent on the sexual signal being heritable, yet this often remains assumed and untested. It is particularly critical that the heritability of carotenoid-based sexual signals is investigated because such traits may instead be phenotypically plastic indicators of an individual's quality that exhibit no or little heritable variation. We present the first study to investigate the relative contribution of genetic and environmental factors to the striking diversity of dewlap color and pattern in Anolis lizards. Using a breeding experiment with Anolis distichus populations exhibiting different dewlap phenotypes, we raise F1 offspring in a common garden experiment to assess whether dewlap color is inherited. We follow this with carotenoid supplementation to investigate the influence of dietary pigments to dewlap color variation. We find significant differences in several aspects of dewlap color and pattern to persist to the F1 generation (fathers: N = 19; F1 males: N = 50; P < 0.01) with no change in dewlap phenotype with carotenoid supplementation (N = 52; P > 0.05). These results strongly support that genetic differences underlie dewlap color variation, thereby satisfying a key requirement of natural selection. Our findings provide an important stepping-stone to understanding the evolution of an incredibly diverse signal important for sexual selection and species recognition.
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Affiliation(s)
- Julienne Ng
- the Department of Biology, University of Rochester, RC Box 270211, Rochester, NY 14627. Richard Glor is now at the Biodiversity Institute and Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, KS
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41
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Colorful displays signal male quality in a tropical anole lizard. Naturwissenschaften 2013; 100:993-6. [DOI: 10.1007/s00114-013-1095-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 08/21/2013] [Accepted: 08/22/2013] [Indexed: 10/26/2022]
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42
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Brown AC, McGraw KJ, Clotfelter ED. Dietary Carotenoids Increase Yellow Nonpigment Coloration of Female Convict Cichlids (Amantitlania nigrofasciata). Physiol Biochem Zool 2013; 86:312-22. [DOI: 10.1086/670734] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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43
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Vroonen J, Vervust B, Van Damme R. Melanin-based colouration as a potential indicator of male quality in the lizard Zootoca vivipara (Squamata: Lacertidae). AMPHIBIA-REPTILIA 2013. [DOI: 10.1163/15685381-00002916] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In many animals, aspects of colouration are hypothesized to convey information on the body condition or quality of individuals. This idea has been tested primarily for the carotenoid-based component of body colouration. The significance of other pigments in this context has received far less attention. In the common lizard, Zootoca vivipara, the degree of black patterning on the ventrum and throats is sexually dimorphic and varies considerably among individuals. In this study, we examine whether this melanin-based component of body colouration may reflect individual differences in quality (SVL, condition, immune response). We find that males (but not females) with a higher degree of ventral patterning mount a stronger phytohemagglutinin-induced immune response. The amount of black patterning does not correlate with body size, body condition, aspects of dorsal colouration or parasite load. We conclude that in male Zootoca vivipara, melanin-based ventral colouration may signal an aspect of immune capacity to sexual rivals or potential partners.
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Affiliation(s)
- Jessica Vroonen
- 1Functional Morphology, Department of Biology, University of Antwerp, Universiteitsplein 1, BE-2610 Wilrijk, Belgium
| | - Bart Vervust
- 2Institute of Biology, Department of Integrative Zoology, University of Leiden, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Raoul Van Damme
- 1Functional Morphology, Department of Biology, University of Antwerp, Universiteitsplein 1, BE-2610 Wilrijk, Belgium
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